Recent content by Joan Fernandez

  1. Joan Fernandez

    A Why is the MGF the Laplace transform?

    Right, I follow... So my question could really be re-phrased as: when t is complex we have a bona fides LT, but what is it that we are doing when in your first integral t is real? Are we just "dotting" the function with an exponential to see how it decays?
  2. Joan Fernandez

    A Why is the MGF the Laplace transform?

    In terms of recovering moments it makes no difference, but what about capturing any oscillating sinusoidal components?
  3. Joan Fernandez

    A Why is the MGF the Laplace transform?

    The Laplace transform gives information about the exponential components in a function, as well as oscillatory components. To do so there is a need for the complex plane (complex exponentials). I get why the MGF of a distribution is very useful (moment extraction and classification of the...
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